One-fifth of Booty to the Cause of Allah (Khumus)

Bukhari :: Book 4 :: Volume 53 :: Hadith 346

Narrated Muawiya:

Allah's Apostle said, "If Allah wants to do good for somebody,
he makes him comprehend the Religion (i.e. Islam), and Allah is the
Giver and I am Al-Qasim (i.e. the distributor), and this (Muslim)
nation will remain victorious over their opponents, till Allah's
Order comes and they will still be victorious "

Narrated Abu Huraira: Allah's Apostle said, "Neither do I give
you (anything) nor withhold (anything) from you, but I am just a
distributor (i.e. Qasim), and I give as I am ordered."